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1. A phase change ink comprising:
an amorphous compound; wherein the amorphous compound comprises a first ester of tartaric acid of the formulawherein each R1, R2, R3, R4, and R5 is independently an alkyl group, wherein the alkyl can be straight, branched or cyclic, saturated or unsaturated, substituted or unsubstituted, having from about 1 to about 40 carbon atoms or a substituted or unsubstituted aromatic or heteroaromatic group, and mixtures thereof;
a crystalline compound; wherein the crystalline compound comprises a second ester of tartaric acid of the formulawherein each R19 and R20 is independently an aryl or a heteroaryl optionally substituted with a lower alkyl and alkoxy, and each n is independently 0 to 3; or
wherein the crystalline compound is a compound of the formulawherein Q is alkanediyl; each R15 and R16 is independently phenyl or cyclohexyl optionally substituted with one or more alkyl; i is 0 or 1; j is 0 or 1; p is 1 to 4; and q is 1 to 4;
an optional dispersant; an optional synergist; an optional colorant; and an alcohol having a long alkyl chain containing from about 10 to about 80 carbon atoms.
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